Cone-grate stoker



June 12, 1928,

1,673,668 0. 1.. ERION ET AL CONE GRATE STOKER Filed J ne 20, 1927 2 SheetsSheet J LA.P20Z2 attomqdl June 12, 1928. o. L. ERION ET AL CONE GRATE STOKER 20, 1927 2 Sheets-Sheet 2 Filed gmmtow Patented June 12, 1928.

UNITED STATES 1,673,668 PATENT OFFICE. 1

OLLIE L. EBIOR AND LEbNABD A. PICK, OF COLUMBUS, OHIO.

CONE-GBATE STOKER.

Application filed June 20, 1927,. Serial No. 200,101.

The present invention has reference to grate construction and aims to, provide a novel form of grate of the cone .type so constructed that fuel deposited at the top of the ate may gravitate to the bottom thereof,

while the fuel is being burned.

- Another object of the invention is to provide a grate including a plurality of supersed corrugated ring members graduated in size and arranged in spaced relation with each other to provide air spaces so that a draft of air may ass through the grate to insure proper com ustion of the fuel.

A still further object of the invention is to provide a shaking ring at the base of the grate, the ring hem of a diameter reater than the diameter the grate proper to receive material from the grate.

A further object of the invention is the provision of means for stoking the grate and simultaneously operatin the shaking ring, thereby preventing the uel from cloggin on the te. w

ith the oregoing and otherfibjects in view which will appear as the description proceeds, the invention resides inthe combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed, ma be made within the scope of what is claimed, without departing from the spirit of the invention.

Referring to the drawings:

Figure 1 is a lon 'tudinal sectional view through a firebox o a furnace illustrating ate and stoker constructed in accordance with the invention.

Figure 2 is a bottom view of the grate.

fFigure 3 is a front elevational view there- 0 Figure 4 is an enlarged detail view illustrating the supporting arms on which the shaking ring operates; Referring to the drawings in detail, the reference character 5 designates the outer casing of the furnace, and the reference character 6 indicates the lining or body portion of the furnace.

The grate formin the essence of the present invention embo ies a plurality of superspaced corrugated ring members 7, the ring members being supported by means of the arms 8, which arms are carried by thebearing rings 9, the arms 8 being of various lengths so that portions of the rings extend beyond the peripheries of their adjacent upper rin s defining shelves so that material may col ect thereon. These arms 8 contact with theadjacent lower ring members to the end that the ring members 7 are held in spaced relation with-each other, al-

lowing air to pass through the conesshaped rate.

At the base of the grate proper is a shaking ring 10 which rests on the brackets 11 and 12 the bracket 11 being formed into ral with the feed pipe 13, while the brac ets 12 are secured to-the inner surface of the member 6. J

Surrounding the inner end of the feed pipe 13 is a curved stoker pipe 14 formed with an enlargement 15 defining a shoulder to receive the weight of the ring members 7 the lowermost bearing ring being shown as resting directly on the shoulder:

Formed in the shaking ring are a plurality of. openings 16, which openings permit the ashes from the burned fuel to pass through the shaking ring and into the ashit directly thereunder. A horizontal shaft mdicated at 17 eitends through the feed pi 13 and stoker pipe 14, the shaft havin a ead 18 formed on its inner end, the hea being supplied with a pin 19 eccentrically mounted on the head, the pin providing means whereby the connecting lin 20 may be connected to the shaft 17.

The upper end of the link 20 connects with the shaking ring 10 through the member 21 that has lvotal connection with the link 20 and whic has an extension 22 supplied with a nut 23 for securing the member 21 to the shaking ring 10, after the extension 22 has been passed through one of the openings 16 of the shaking ring. It will thus be seen that the movement of the link and shaking ring 10 may be adjusted or varied, by merely chan the position of the extension 22 by p acmg the extension 22 in one of the shaking ring and substituting a longer or shorter link 20.

adjacent openings of the Operating in the ipe 13 is a worm 24 that is mounted on t e shaft 17, theworm actin to feed material to the stoker pipe 14. s shown by Figure 1, the feed pipe 13 is formed with an opening 25 through which fuel, which may be m the form of coke, coal or the like, passes to the feed pipe 13.

Arranged above the pipe 13 and communicating therewith is a delivery pipe 26 through which fuel passes to the feed pipe 13. An agitator 27 operates in the pipe 26 loosening the material in the pipe 26 and preventing the material from clogging on its passage to the pipe 13.

A sprocket wheel indicated at 28 is mounted on the forward end of the shaft 17 and transmits movement to the shaft 29 through the sprocket wheel 30 and chain 31 operating over the sprocket wheels 28 and 30. A power chain 32 from a suitable ower device not shown, operates over sprocket wheel 33 secured to the shaft 17 to o erate the worm and simultaneously operate t e shaking ring. In order that the shaft 17 may, if desired, be operated by manual power, a crank 34 is provided which crank is secured at the forward end of the shaft 17 as shown by Figure 1.

From the foregoing it will be seen that fuel may be fed upwardly through the coneshaped grate, when the shaft 17 is operated to cause the worm 24 to force the material v the pipe 14. It will also be or fuel fed into the feed noted that t e fuel passing from the pipe 14 collects at the top of the grate and falls by gravity over pipe throu h.

the several corrugated ring members where it is burned, the ashes fallin onto the shaking ring 10, which moves back and forth under the action of the shaft 17 and link 20.

We claim:

In combination with a furnace a stoker pipe therein, directed upward and havin an external shoulder, bearing rings mounte on said ipe with the lowest ring resting on said s oulder, each said ring being provided with radial arms, corrugated grate rings surrounding said pipe and supported in stepped relation by said arms, a shaking ring arranged below the lowest grate ring and in stepped relation thereto, a feed ipe communicating with the stoker pi e, a s aft extending axially through the fee pipe and through the lower end of the stoker pipe, a s iral vane on the shaft for forcing fuel t rough said ipe onto the grate and means for transmitting motion from the shaft to the shaking ring.

In testimony that we claim the foregoing as our own, we have hereto afiixed our signatures.

OLLIE L. ERION. LEONARD A. PICK. 

